Why DART is a mover and shaker in asteroid planetary defense: NASA science chief
NASA will slam the DART spacecraft into an asteroid for target practice to get ready for the next big hit, but don't worry: nothing big is set to come at us for the next 100 years.
TroibNews 
NASA will slam the DART spacecraft into an asteroid for target practice to get ready for the next big hit, but don't worry: nothing big is set to come at us for the next 100 years.
